Ball-rolling apparatus



BALL ROLLING APPKRATUS.

APFLICAT 0V. 2 1919- 1,399,686. Patented Dec. 6, 1921.

2 EEEEEEEEEEEE I.

F. M. CANDA.

BALL ROLLING APPARATUS.

APPLICATION FILED NOV. 12, 1919.

2 SHEETS-SHEET 2.

' ATMRM'Y Patented Dec. 6, 1921.

UNITED, s'rAras FERDINAND Mona canon, on new. roan, iv. v.

BALL-ROLLING Arranarus.

Specification of Letters Patent.-

Patented nee. a, war.

Application filed November 12, 1919. ,Serial No. 337,556.

To all whom it may concern Be' it known that l, FERDINAND Mona CANDA, a citizen of the United States of cooperating disks grooved in the manner hereinafter described, at least one of said disks being arrangedto rotate with respect to the other, though preferably both rotate. These disks are so formed relativelythat the space between them contracts gradually,

throughthe grooved space. Into the widerpart of the space between the disks the end portion of a rod to be formed into balls may be introduced; whereupon, the disks, or at least one of them, being in rotation, the ridges between their grooves divide the bar into sections which, by the action of the grooves, are rolled into ball form. Other features of my invention will be pointed out hereafter.

'The object of my invention is to form balls, particularly of-iron or steel, relatively inexpensively, rapidly, and by simple apparatus; v

I will now proceed todescribe my invention with reference to the accompanying drawings, and will then point out the novel features in claims.

In said drawings: g

Figures 1 to 5 inclusive are more or less diagrammatic, but illustrate tlie essential features of apparatus embodying my inven tion, Fig. 1 being atop viewof such apparatus, Fig. 2 a vertical section on the line 2-2 of Fig. 1, Fig. 3 a front elevation of the apparatus, Fig. 4: a top view of the bottom die, and Fig. 5 a bottom view of the top die.

Fig. 6 shows a top view and Fig. 7 a side elevation and partial section of more complete apparatus embodying my invention.

Referring first to Figs. 1 and 2: 1 designates a top die-disk, and 2 abottom die-disk,

mounted respectively on shafts 3 and a, by which they may be rotated. As appears particularly from Fig. 5, the top disk, 1, 1s provided on its end face with a series of concentric grooves 5 of substantially semicircular profile. The top face of the lower disk, 2, is divided into alternate segments 6 and 7, of which 6 are grooved, and 7 are not grooved; and moreover the said grooved segments 6 have inclined surfaces, so that the spaces between these grooved segments 6 and the bottom surface of the disk 1 grow progressively narrower. Moreover, prefer ably the initial portion 6 of each such grooved segment 6 is inclined or pitched more sharply at the rear (2 6., near the center of the disk) than at the front; the result being that in the active ball forming portion 6 of each such segment the grooves are of nearly equal length, notwithstanding differences of radial distance.

The operation of my improved ball rollmg machme is as follows: The disks 1 and 2 being 1n rotation in opposite directions, a

bar of material to be rolled into balls is introduced radially at a time when one of the ungrooved segments 7 of the lowerdisk is in front of the point of introduction, this bar being pushed back close to the central hub 9 of. disk 1, which forms an end stop for the bar. Rotation of disk 2 brings the initial sharply-tapered portion 6 of one of the grooved segments 6 against the bar and therebythe bar, is rolled between disks 1 and 2, the ribs of the two disks cutting into the material of the bar and dividing it into ballsections, which, particularly after these sections have reached the more gradually-tapering portion 6*, are rolled into the form of balls and are severed, falling into the next ungrooved segment 7, wherefrom they are expelled by centrifugal force or otherwise, as for example, by hand. To facilitate expelling the balls, the floors of the segments 7 may slope downward and outward as shown, so that the balls tend to roll out.

Ordinarily, the bar to be rolled into balls is of a length considerably greater than the distance fromthe hub 9 to the periphery of disks 1 and 2. Consequently, as soon as one section of this rod has been rolled into balls, and, in the process of rolling, has been cut off from the main bar, said bar is pushed in for a further distance as soon as its end is opposite another ungrooved segment 7 of the lower disk, and the operation repeated in Figs. 1 to 5 inclusive.

until too little of the bar remains for inserhand 2?, have beveled gear-rings on their the rollers by stifi'springs 17.

peripheries, and are driven by a bevel pinion 11". Furthermore, the lower disk, 2, is supported on substantially peripheral bearing rollers 12 carried by a massive bed plate 13. The upper disk, 1, is mounted on a central shaft 1% itself having suitable bearings, but upward thrust on the disk 1 due to resistance afforded by the material being rolled is taken by substantially peripheral rollers 15 working against a backing ring 16 mounted in top disk-l7 and held against Base disk 13 and annular top disk 17 are held together by massive bolts 18.

WVhat I claim is j r 1. In a ball rolling apparatus, thecombination of two cooperating ball rolling disks, rotatable one with respect to the other, one of said disks having alternate grooved and ungrooved segments, the former elevated above the latter, the surfaces of the ungrooved segments being inclined downwardly and outwardly to facilitate discharge of the finished balls. 7

2. In a ball rolling apparatus, the combination of two cooperating ball rolling disks, rotatable one with respect to the other, one of said disks having alternate grooved and ungrooved segments, each grooved segmen't comprising a. relatively steeply indegrees of inclination.

'clined portion merging into a less steeply inclined portion.

3. In a ball rolling apparatus, the combination of two cooperating ball rolling disks, rotatable one with respect to the other, one of said disks having alternate grooved and ungrooved segments, each grooved segment comprisingdifferent portions of different 4. In a ball rolling apparatus, the combination of two cooperating ball rolling disks, rotatable one with respect to the other, one

of said disks having alternate grooved and ungrooved segments, each grooved segment comprising an introductory steeply inclined. portion and a further less steeply inclined portion, the inner part of the less steeply inclined portion being of greater angular length than the outer part, whereby inner grooves may be of nearly the same linear length as outer grooves.

55. In a ball rolling apparatus, the combination of two cooperating ball rolling disks, rotatable one with respect to the other, at least one of which disks is grooved, at least one of which disks is provided with means for the reception of material to be rolled, and at least one of which disks is provided with a central hub forming an end stop for the material to be introduced.

6. In a ball rolling apparatus, the combination of two cooperating ball rolling disks, means for rotating one with respect to the other, and a spring backing for one of said 7 disks operating upon said disk adjacent the periphery thereof.

7. In a ball rolling apparatus, the c0mbination of two cooperating ball rolling disks, means for rotating one with respect to the other, a backing plate for one of said disks, springs working against said backing plate, and means for receiving the thrust of said sprlngs.

8. In a ball rolling apparatus, the combination of two coiiperating ball rolling disks, means for rotating one of said disks with respect to the other, a backing plate for such rotatable disk, bearing rollers between said rotatable disk and backing plate, springs bearing against said backing plate, and means for receiving the thrust of said sprmgs.

9. In a ball rolling apparatus, the combination of two cooperating ball rolling disks, a frame in which said disks have central bearings permitting their rotation, means for rotating said disks, and peripheral bearings for said disks, one of such peripheral bearings having a yieldable spring-pressed backing.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

FERDINAND MORA CANDA.

WVitnesses:

I-I. MARBLE, IRWIN J. STURMWALD. 

